期刊
PHYSICS LETTERS B
卷 781, 期 -, 页码 99-106出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2018.03.064
关键词
Energy conditions; Alternative theories of gravity; Cosmology
资金
- MEXT KAKENHI [15H05890]
- MINECO (Spain) [FIS2016-76363-P]
- CSIC I-LINK [1019]
- JSPS short-term fellowship [S17116]
- Istituto Nazionale di Fisica Nucleare (INFN)
- COST (European Cooperation in Science and Technology) [CA15117]
- Grants-in-Aid for Scientific Research [15H05890] Funding Source: KAKEN
Energy conditions can play an important role in defining the cosmological evolution. Specifically acceleration/deceleration of cosmic fluid, as well as the emergence of Big Rip singularities, can be related to the constraints imposed by the energy conditions. Here we discuss this issue for f(R) gravity considering also conformal transformations. Cosmological solutions and equations of state can be classified according to energy conditions. The qualitative change of some energy conditions when transformation from the Jordan frame to the Einstein frame done is also observed. (C) 2018 The Authors. Published by Elsevier B.V.
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